The term Achalasia can be usually defined as the lack of the lower esophageal sphincter to relax and also the presence of esophagus motility abnormalities. Achalasia is usually a form of disease of the muscle of the esophagus (which is usually known as swallowing tube). The term achalasia means "failure to relax" and inability of the lower esophageal sphincter (the ring of muscle situated between the lower esophagus and the stomach) to open and which helps let the food pass into the stomach.
Signs and Symptoms: Achalasia is mainly associated with abnormalities of esophageal peristalsis (usually complete absence of peristalsis) which is usually the coordinated muscular activity of the body of the esophagus (which mainly comprises 90% of the esophagus) which plays a major role in transportation of food from the throat to the stomach.
Disease statistics: Achalasia is an uncommon swallowing disorder that affects about 1 in every 100,000 people. It occurs equally in males and females. It is typically diagnosed in adults, but can occur in children as well.Disease affects mostly adults between ages 30s and 50s.